Cortizo Cor Vision Sliding Doors | Premium Aluminium

The COR Vision sliding door from Cortizo is a super slender aluminium system offering outstanding versatility and creating a high-end sliding door solution for any property. The glass is structurally bonded to the sash, allowing for minimal sightlines. The frames can also be embedded into the surrounding walls, maximising the amount of glass on display. This is our personal favourite with the fastest lead times, best value, and the thinnest sightlines in the UK, just 20mm!

U-value of 1.3 W/m²K
20mm interlock profile
30mm maximum glazing thickness
Double glazing options available
Up to 6 sashes and 3 rails
Polyamide strip length from 16 to 24mm
Maximum sash width of 2500mm and height of 3000mm
Maximum sash weight of 320kg

Aluminium sliding doors opening to a scenic outdoor view with a pool and patio area.

Technical Specifications
Colours & Finishes

Technical Specifications

Cortizo COR Vision — Technical Specifications
Specification	Value
Sightline (interlock)	20 mm
U-value (Uw)	≥ 1.3 W/m²K
Sound insulation (Rw)	up to 41 dB
Maximum sash dimensions	Width 2,500 mm × Height 3,000 mm
Maximum sash weight	320 kg
Maximum glazing thickness	30 mm
Minimum glazing thickness	26 mm
Frame section	116 mm (2-track) / 182 mm (3-track)
Sash profile	37 mm
Profile thickness	1.7 mm
Polyamide strip length	16 / 24 mm
Opening configurations	Single, double, or triple track; pocket system; 90° corner without mullion
Air permeability	Class 4
Water tightness	Class 7A
Wind resistance	Class C5

Glass Options

All our Cortizo sliding doors are available with a choice of high-performance glazing to suit your project requirements:

Double-glazed sealed units — standard specification for thermal efficiency
Triple-glazed units — enhanced thermal and acoustic performance
Acoustic laminated glass — for noise reduction in urban and roadside locations
Solar control glass — reduces heat gain and glare while maintaining natural light

We specify the optimal glass configuration for each project based on thermal performance, acoustic requirements and Building Regulations compliance.

Aluminium sliding door frame with glass panels for modern home design.

Colours & Finishes

Our Cortizo sliding doors are available in three premium finish categories — anodised, matt RAL and textured RAL — with dual-colour options allowing a different finish inside and outside. Woodgrain foil finishes are also available for a natural timber-effect appearance.

Popular RAL Colours

RAL Code	Colour Name
RAL 7016	Anthracite Grey
RAL 9005	Jet Black
RAL 7021	Black Grey
RAL 9010	Pure White
RAL 9001	Cream White
RAL 7012	Basalt Grey
RAL 7022	Umbra Grey
RAL 6009	Fir Green
RAL 8014	Sepia Brown

Any standard RAL colour is available to order. Slimline sliding doors are often specified with a matt or textured finish in darker tones to maximise the contrast between frame and glass.

FAQs About Cortizo COR Vision Sliding Door at Direct Trade Windows

What makes COR Vision Sliding Doors different from other sliding systems

They feature minimal visible frames (just 20mm interlock), giving a sleek, modern look while delivering exceptional performance in thermal insulation, acoustic comfort, and smooth operation.

Can COR Vision Sliding Doors be made to custom sizes?

Yes – they are fully customisable in size, configuration, and finish, making them ideal for bespoke architectural projects.

Do they offer good thermal efficiency?

Yes – with advanced thermal break technology and double or triple glazing options, they achieve excellent insulation values to improve comfort and energy efficiency.

Are there multiple opening configurations available?

Absolutely – COR Vision can be designed as two-, three-, or four-panel systems, with fixed and sliding combinations to suit your space.

Can they be flush-fitted for a seamless floor level?

Yes – they can be installed with a flush threshold, creating a smooth, step-free transition between inside and outside.

What glazing options are available?

They support large-format double or triple glazing for maximum clarity, safety, and performance.

Are COR Vision Sliding Doors secure?

Yes – they come with multi-point locking systems and high-strength aluminium frames for outstanding security.

Can they be motorised?

Yes – COR Vision can be fitted with an automated opening system for effortless operation.

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Cortizo COR Vision Sliding Door

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